An object is placed in front of a converging lens. Obtain the conditions under which the magnification produced by the lens is (i) negative and (ii) positive.

Magnification by Spherical Lenses, Lens Formula and Magnification with Sign Convention | PadhAiPro

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TextMagnification by Spherical LensesLens Formula and Magnification with Sign ConventionCBSE PYQ

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The power of a lens 'X' is – 2·5 D. Name the lens and determine its focal length in cm. For which eye defect of vision will an optician prescribe this type of lens as a corrective lens ?

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